. A cube is given with an edge of 12 units.it is painted on all faces and then cut into smaller cubes of edge of 4 units. How many cubes will have 2 faces painted?
A. 2
B. 12
C. 8
D. 0

• cubes having two faces painted are:
  12(n-2)
  
  where n=12/4=3
  => 12(3-2)=12
  
  ans:12
• 7 years agoHelpfull: Yes(23) No(1)
• Total no. of cubes =27
  
  No faces are painted = 1 (center)
  1 face is painted = 6 (center of 6 faces of cube)
  3 faces are painted= 8 (all corner ones)
  2 faces are painted= 12 (remaining ones)
• 6 years agoHelpfull: Yes(6) No(0)
• Answer should be 12
• 7 years agoHelpfull: Yes(5) No(1)
• 8 is the answer
• 7 years agoHelpfull: Yes(5) No(12)
• if an edge is of 12 unit after cutting into smaller cubes
  edge of smaller cube will be of 3 unit and there will be only one cube along a edge which have 2Faces painted
  total no of edges in the cube is 12
  1 edge -1 cube 2 face painted
  12 edges -12 face painted
• 7 years agoHelpfull: Yes(4) No(2)
• i think 12 is the answer
• 7 years agoHelpfull: Yes(3) No(2)
• cube having two face painted are 12
• 7 years agoHelpfull: Yes(2) No(0)
• 12 is the answer = 4 up + 4 down + 4 middle
  hint : assume it as a rubic cube.
• 7 years agoHelpfull: Yes(2) No(1)
• 8
  each edge is cut into 3 parts.only the center cube from each edge will be two sides painted,so top face has four cubes with two sides painted and bottom face will have four cubes with two sides painted..totally 8 cubes are painted on two faces.
• 7 years agoHelpfull: Yes(2) No(4)
• 12 cubes
  ans is B
• 7 years agoHelpfull: Yes(1) No(0)
• Cubes having two faces painted= (x-2) *No. of edges
  
  Here,
  x=(Length of bigger cube/Length of smaller cube) ==> x=(12/4)= 3
  No. of edges of the cube= 12
  
  Therefore,
  No. of two face painted cubes =(3-2)*12
  =12 cubes
  
  The answer is Option(B)==> 12
• 6 years agoHelpfull: Yes(1) No(0)
• 12(n-2) with 2 faces
  given edges 12,4
  then n=12/4=3
  12(3-2)
  12(ans)
• 6 years agoHelpfull: Yes(1) No(0)
• 12 as no. of cube is 27 of 4 units so having 2 faces painted is 12
• 7 years agoHelpfull: Yes(0) No(0)
• 12
  9 cubes on base then 3 layers of 9 -9 cubes
• 7 years agoHelpfull: Yes(0) No(0)
• 12 count only those at edges and cube has 12 edges
• 7 years agoHelpfull: Yes(0) No(0)
• (12-8)/4 * 4 * 3 = 12
• 7 years agoHelpfull: Yes(0) No(0)
• 12 cubes willl be 2 face painted.
  1 along each edge.
  total no. of edge in a cube is 12
• 7 years agoHelpfull: Yes(0) No(0)
• 12 is the answer
• 7 years agoHelpfull: Yes(0) No(0)
• c.For 1 layer ,4 two sides will be painted.
  therefre for 3 layers 4*3=12
• 7 years agoHelpfull: Yes(0) No(0)
• the correct ans is 12
• 7 years agoHelpfull: Yes(0) No(0)
• 1= without painted
  10= 1 face painted
  8 = 2 face painted
  8= 3 face painted
• 7 years agoHelpfull: Yes(0) No(4)
• 12 should be the answer. 12(n-2) where n is the number of segments in which the cube is divided
• 7 years agoHelpfull: Yes(0) No(0)
• upper layer= 4, middle = 4, down= 4
  total=12
• 7 years agoHelpfull: Yes(0) No(0)
• 8 is the answer...as if we make the cube to 4 units cube that means the cube is cut into 3 lines vertically and horizontally.
• 7 years agoHelpfull: Yes(0) No(0)
• 12 is the answer
• 7 years agoHelpfull: Yes(0) No(0)
• 12/4=3
  12(3-2)=12
• 7 years agoHelpfull: Yes(0) No(0)
• 12
  12 (12/4-2)=12
• 6 years agoHelpfull: Yes(0) No(0)